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It uses ephemeral (single use) Curve25519 points in X25519 (Curve25519 ECDH) for key agreement and static long term Ed25519 keys for authentication. Like basically every other protocol from around the same era. If you want to know how some cipher suites for SSH work, you should read the RFCs or openssh documentation (for their extensions). For example: ...


Yes, this is possible. Kerberos runs on port 88 on macOS. Kerberos by default has no protections against brute forcing. Submitting an enormous volume of password authentication requests to Kerberos is possible, though to be honest such a thing is useless unless your password is incredibly poor. Kerberos does allow authentication against any user account on ...

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